Top 100 Contractors in NAICS 62199: All Other Ambulatory Health Care Services, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Acuity-Chs, LLC Top agencies DHS (Department of Homeland Security)	$36,151,495	5.8%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; up 2 since FY2024.
2	The Arora Group, Inc. Top agencies DHS (Department of Homeland Security)	$35,543,611	5.7%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; up 34 since FY2024.
3	Amergis Healthcare Staffing Inc. 2 awardees Top agencies DHS (Department of Homeland Security)	$34,419,922	5.5%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; up 35 since FY2024.
4	Servefed Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$25,826,555	4.1%	Rank history: #8 in FY2021, #8 in FY2022, #7 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	The American National Red Cross 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$23,748,702	3.8%	Rank history: #3 in FY2021, #7 in FY2022, #6 in FY2023 and #4 in FY2024; down 1 since FY2024.
6	Ingenesis Inc. Top agencies DHS (Department of Homeland Security)	$22,638,843	3.6%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 34 since FY2024.
7	LMR Technical Group LLC Top agencies USAF (Department of the Air Force)	$17,404,456	2.8%	Rank history: not on the FY2021–FY2024 lists; up 174 since FY2024.
8	Cognito Systems LLC Top agencies Army (Department of the Army)	$16,279,620	2.6%	Rank history: #7 in FY2021, #11 in FY2022, #11 in FY2023 and #7 in FY2024; down 1 since FY2024.
9	STG International, Inc. Top agencies HHS (Department of Health and Human Services)	$16,277,945	2.6%	Rank history: #1 in FY2021, #4 in FY2022, #1 in FY2023 and #1 in FY2024; down 8 since FY2024.
10	Dawson Cms, LLC Top agencies Army (Department of the Army)	$14,675,605	2.4%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; up 4 since FY2024.
11	Dilligas Corp Top agencies DHA (Defense Health Agency)	$13,613,226	2.2%	Rank history: #44 in FY2021, #15 in FY2022, #8 in FY2023 and #15 in FY2024; up 4 since FY2024.
12	Health Partner's Management Group, Incorporated Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$13,551,934	2.2%	Rank history: #17 in FY2021, #18 in FY2022, #13 in FY2023 and #9 in FY2024; down 3 since FY2024.
13	CG Services LLC Top agencies DHA (Defense Health Agency)	$12,397,727	2.0%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list and #10 in FY2024; down 3 since FY2024.
14	Destiny Management Services, LLC Top agencies DHA (Defense Health Agency)	$11,751,750	1.9%	Rank history: #12 in FY2021, #20 in FY2022, #9 in FY2023 and #8 in FY2024; down 6 since FY2024.
15	Arapaho Technical Services LLC Top agencies DHA (Defense Health Agency)	$10,223,191	1.6%	Rank history: #38 in FY2021, #46 in FY2022, #38 in FY2023 and #16 in FY2024; up 1 since FY2024.
16	T3I, Inc. Top agencies USAF (Department of the Air Force)	$9,583,404	1.5%	Rank history: #14 in FY2021, #31 in FY2022, #19 in FY2023 and #13 in FY2024; down 3 since FY2024.
17	Kako'o Services LLC Through Nationwide Healthcare Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$9,469,474	1.5%	Rank history: not on the FY2021–FY2024 lists; new.
18	Koniag, Inc. 2 awardees, including Kadiak LLC and Koniag Professional Services, LLC Top agencies DHS (Department of Homeland Security) DOL (Department of Labor)	$8,851,240	1.4%	Rank history: #28 in FY2021, #16 in FY2022, #18 in FY2023 and not on the FY2024 list; up 94 since FY2024.
19	University of Texas System 3 awardees, including The Univeristy of Texas M.d. Anderson Cancer Center, The University of Texas Southwestern Medical Center and University of Texas Health Science Center At Houston Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$8,795,167	1.4%	Rank history: #22 in FY2021, #14 in FY2022, #14 in FY2023 and not on the FY2024 list; up 193 since FY2024.
20	Forensic Drug & Alcohol Testing LLC Top agencies DOT (Department of Transportation) NRC (Nuclear Regulatory Commission) DOJ (Department of Justice)	$8,370,366	1.3%	Rank history: #41 in FY2021, #35 in FY2022, #29 in FY2023 and #18 in FY2024; down 2 since FY2024.
21	Blood Systems Inc. 3 awardees, including Vitalant and Lifestream Blood Bank Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$7,275,082	1.2%	Rank history: #25 in FY2021, #37 in FY2022, #31 in FY2023 and #21 in FY2024; unchanged since FY2024.
22	Strategic Resources, Incorporated Through North East South West Healthcare Solutions, LLC Top agencies DHS (Department of Homeland Security)	$7,039,209	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
23	Avosys Technology, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$5,792,145	0.9%	Rank history: #18 in FY2021, #22 in FY2022, #10 in FY2023 and #20 in FY2024; down 3 since FY2024.
24	Bestica, Inc. 2 awardees, including Stratus Federal Solutions LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$5,715,672	0.9%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; up 45 since FY2024.
25	Seattle Indian Health Board Top agencies HHS (Department of Health and Human Services)	$5,515,303	0.9%	Rank history: #19 in FY2021, #33 in FY2022, #28 in FY2023 and #23 in FY2024; down 2 since FY2024.
26	Caban Resources LLC Top agencies DHA (Defense Health Agency)	$5,417,147	0.9%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; down 2 since FY2024.
27	Avel Ecare LLC Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) Army (Department of the Army)	$5,155,350	0.8%	Rank history: not on the FY2021–FY2024 lists; up 254 since FY2024.
28	Gift of Hope Organ & Tissue Donor Network Top agencies VA (Department of Veterans Affairs)	$5,084,875	0.8%	Rank history: #48 in FY2021, #57 in FY2022, #20 in FY2023 and #31 in FY2024; up 3 since FY2024.
29	Oneblood, Inc. Top agencies VA (Department of Veterans Affairs)	$4,846,664	0.8%	Rank history: #30 in FY2021, #29 in FY2022, #58 in FY2023 and #25 in FY2024; down 4 since FY2024.
30	Reef Systems Corp Top agencies USAF (Department of the Air Force)	$4,602,142	0.7%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; up 19 since FY2024.
31	Bloodworks Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$4,405,709	0.7%	Rank history: #21 in FY2021, #32 in FY2022, #32 in FY2023 and #29 in FY2024; down 2 since FY2024.
32	Duke University Top agencies HHS (Department of Health and Human Services)	$4,396,320	0.7%	Rank history: #59 in FY2021, #26 in FY2022, #23 in FY2023 and #28 in FY2024; down 4 since FY2024.
33	BMC Software Inc. Through American Indian Health & Services Corporation Top agencies HHS (Department of Health and Human Services)	$3,810,866	0.6%	Rank history: not on the FY2021–FY2024 lists; up 133 since FY2024.
34	Four Winds Staffing LLC Top agencies HHS (Department of Health and Human Services)	$3,254,198	0.5%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 24 since FY2024.
35	Distinctive Health Spectrum Care JV LLC Through Distinctive Spectrum Healthcare Solutions JV LLC Top agencies DHA (Defense Health Agency)	$3,251,789	0.5%	Rank history: not on the FY2021–FY2024 lists; up 101 since FY2024.
36	Center for Organ Recovery & Education Top agencies VA (Department of Veterans Affairs)	$3,202,157	0.5%	Rank history: #37 in FY2021, #55 in FY2022, #55 in FY2023 and #37 in FY2024; up 1 since FY2024.
37	Medforce Government Solutions, Inc. Top agencies DHA (Defense Health Agency)	$2,973,809	0.5%	Rank history: #15 in FY2021, #12 in FY2022, #21 in FY2023 and #33 in FY2024; down 4 since FY2024.
38	The Chenega Corporation 2 awardees, including Chenega Healthcare Services LLC and Chenega Reliable Services LLC Top agencies DOE (Department of Energy)	$2,916,634	0.5%	Rank history: #24 in FY2021, #58 in FY2022, #33 in FY2023 and not on the FY2024 list; up 137 since FY2024.
39	Sword Health Inc. Top agencies DHA (Defense Health Agency)	$2,605,000	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
40	Csrs3 LLC Top agencies DHA (Defense Health Agency)	$2,593,834	0.4%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2024; up 42 since FY2024.
41	The Native American Rehabilitation Association of the Northwest, Incorporated Top agencies HHS (Department of Health and Human Services)	$2,543,023	0.4%	Rank history: #36 in FY2021, #49 in FY2022, #41 in FY2023 and #48 in FY2024; up 7 since FY2024.
42	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$2,467,768	0.4%	Rank history: #34 in FY2021, #41 in FY2022, #15 in FY2023 and #26 in FY2024; down 16 since FY2024.
43	Modern Healthcare Services JV LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$2,408,191	0.4%	Rank history: #32 in FY2021, #44 in FY2022, #37 in FY2023 and #45 in FY2024; up 2 since FY2024.
44	Posterity Group LLC Through Defense Health Professionals LLC Top agencies DHA (Defense Health Agency)	$2,204,508	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
45	New York Blood Center, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,088,590	0.3%	Rank history: #53 in FY2021, #100 in FY2022, #46 in FY2023 and #51 in FY2024; up 6 since FY2024.
46	University of Arizona Top agencies HHS (Department of Health and Human Services)	$2,045,051	0.3%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2024; up 7 since FY2024.
47	National Marrow Donor Program Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,950,260	0.3%	Rank history: #2 in FY2021, #39 in FY2022, #49 in FY2023 and #57 in FY2024; up 10 since FY2024.
48	General Infomatics-A Service Disabled Owned Veteran Business, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,949,777	0.3%	Rank history: #40 in FY2021, #51 in FY2022, #35 in FY2023 and #65 in FY2024; up 17 since FY2024.
49	The Native Project Top agencies HHS (Department of Health and Human Services)	$1,942,421	0.3%	Rank history: #55 in FY2021, #60 in FY2022, #47 in FY2023 and #54 in FY2024; up 5 since FY2024.
50	Native American Development Corp Top agencies HHS (Department of Health and Human Services)	$1,824,429	0.3%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and #55 in FY2024; up 5 since FY2024.
51	San Diego American Indian Health Center Top agencies HHS (Department of Health and Human Services)	$1,770,854	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
52	Lifesouth Community Blood Centers Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,755,185	0.3%	Rank history: #49 in FY2021, #54 in FY2022, #43 in FY2023 and not on the FY2024 list; returned.
53	Metropolitan Medical LLC Top agencies DOJ (Department of Justice)	$1,750,610	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 3 since FY2024.
54	Abbott Laboratories Inc. Through Pembrooke Occupational Health, Inc. Top agencies DOI (Department of the Interior) DOE (Department of Energy) DHS (Department of Homeland Security)	$1,736,972	0.3%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 12 since FY2024.
55	American Indian Association of Tucson, Inc. Top agencies HHS (Department of Health and Human Services)	$1,667,849	0.3%	Rank history: #74 in FY2021, #21 in FY2022, #57 in FY2023 and #63 in FY2024; up 8 since FY2024.
56	Urban Indian Center of Salt Lake Top agencies HHS (Department of Health and Human Services)	$1,663,977	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, #54 in FY2023 and #60 in FY2024; up 4 since FY2024.
57	Indian Health Center of Santa Clara Valley Top agencies HHS (Department of Health and Human Services)	$1,650,779	0.3%	Rank history: #11 in FY2021, #59 in FY2022, #48 in FY2023 and #59 in FY2024; up 2 since FY2024.
58	Lifegift Organ Donation Center Top agencies VA (Department of Veterans Affairs)	$1,640,000	0.3%	Rank history: #83 in FY2021, #67 in FY2022, #42 in FY2023 and #52 in FY2024; down 6 since FY2024.
59	Katmai Commodities, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$1,634,684	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #47 in FY2024; down 12 since FY2024.
60	Prime Tri Providers LLC Top agencies HHS (Department of Health and Human Services)	$1,577,524	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
61	Fidelity Partners Services LLC Top agencies Army (Department of the Army)	$1,552,877	0.2%	Rank history: not on the FY2021 list, #63 in FY2022, #63 in FY2023 and #68 in FY2024; up 7 since FY2024.
62	National Associates, Inc. Top agencies DHA (Defense Health Agency)	$1,542,391	0.2%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; up 23 since FY2024.
63	Fresno American Indian Health Project Top agencies HHS (Department of Health and Human Services)	$1,503,025	0.2%	Rank history: #16 in FY2021, #69 in FY2022, #51 in FY2023 and #67 in FY2024; up 4 since FY2024.
64	Muscogee Asset Protection, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,501,312	0.2%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 14 since FY2024.
65	A To Z Management Consulting, LLC Top agencies DHS (Department of Homeland Security)	$1,499,958	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
66	Interagency Readiness Solutions, LLC Top agencies Army (Department of the Army)	$1,399,084	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, not on the FY2023 list and #61 in FY2024; down 5 since FY2024.
67	Carter Bloodcare Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,369,372	0.2%	Rank history: #68 in FY2021, #52 in FY2022, #67 in FY2023 and #72 in FY2024; up 5 since FY2024.
68	Apogee Solutions, Inc. Top agencies Navy (Department of the Navy)	$1,321,875	0.2%	Rank history: #69 in FY2021, #66 in FY2022, not on the FY2023 list and #74 in FY2024; up 6 since FY2024.
69	South Texas Blood & Tissue Center Top agencies DHA (Defense Health Agency)	$1,306,686	0.2%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2023–FY2024 lists; up 205 since FY2024.
70	Dt-Trak Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$1,256,932	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024 list; returned.
71	Human Resources Research Organization (Humrro) Top agencies DHS (Department of Homeland Security)	$1,236,569	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
72	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs)	$1,233,166	0.2%	Rank history: #78 in FY2021, #76 in FY2022, #81 in FY2023 and #71 in FY2024; down 1 since FY2024.
73	One Stop Recruiting LLC Top agencies VA (Department of Veterans Affairs)	$1,226,355	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
74	Laredo Technical Services, Inc. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$1,225,588	0.2%	Rank history: not on the FY2021–FY2024 lists; up 183 since FY2024.
75	Vergence LLC Top agencies Army (Department of the Army)	$1,207,380	0.2%	Rank history: #79 in FY2021, not on the FY2022 list, #83 in FY2023 and #83 in FY2024; up 8 since FY2024.
76	Capital MED Group LLC Top agencies DOJ (Department of Justice)	$1,192,391	0.2%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and #95 in FY2024; up 19 since FY2024.
77	Versiti Blood Health, Inc. 2 awardees, including Versiti Indiana, Inc. Top agencies VA (Department of Veterans Affairs)	$1,120,749	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2024 list; up 39 since FY2024.
78	Blackwoods Emergency Resources LLC Top agencies USDA (Department of Agriculture)	$947,581	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
79	The Abraham J & Phyllis Katz Cord Blood Foundation Top agencies HHS (Department of Health and Human Services)	$895,776	0.1%	Rank history: #92 in FY2021, not on the FY2022 list, #87 in FY2023 and #87 in FY2024; up 8 since FY2024.
80	Godwin Corp Top agencies DHA (Defense Health Agency)	$892,856	0.1%	Rank history: #98 in FY2021, #87 in FY2022, #70 in FY2023 and #88 in FY2024; up 8 since FY2024.
81	Innovative Systems Group of Florida, Inc. Top agencies Army (Department of the Army) DODEA (Department of Defense Education Activity)	$877,465	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #85 in FY2023 and #79 in FY2024; down 2 since FY2024.
82	Quest Diagnostics Incorporated Through Quest Diagnostics Clinical Laboratories, Inc. Top agencies DOI (Department of the Interior) DOJ (Department of Justice) DHS (Department of Homeland Security)	$854,600	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #99 in FY2024; up 17 since FY2024.
83	Akahi Associates, LLC 2 awardees, including Akahi Ingenesis Partners LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$844,358	0.1%	Rank history: not on the FY2021–FY2024 lists; up 97 since FY2024.
84	Rough Country Response LLC Top agencies USDA (Department of Agriculture)	$839,868	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2024; up 8 since FY2024.
85	Specialtycare, Inc. Through Specialtycare Cardiovascular Resources, LLC Top agencies VA (Department of Veterans Affairs)	$829,994	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 11 since FY2024.
86	2Srg Inc. Top agencies DOE (Department of Energy)	$829,027	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
87	Emergency Response Logistics, LLC Top agencies USDA (Department of Agriculture)	$818,749	0.1%	Rank history: not on the FY2021–FY2024 lists; up 42 since FY2024.
88	Correctional Dialysis Services LLC Top agencies DOJ (Department of Justice)	$728,712	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Bgesh Incorporated Top agencies DHA (Defense Health Agency)	$717,752	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #94 in FY2024; up 5 since FY2024.
90	Backcountry Response, LLC Top agencies USDA (Department of Agriculture)	$713,278	0.1%	Rank history: not on the FY2021–FY2024 lists; up 96 since FY2024.
91	Bfrench Consulting LLC Top agencies DHA (Defense Health Agency)	$703,876	0.1%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2024; up 7 since FY2024.
92	Surgical Neuromonitoring Associates, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$692,878	0.1%	Rank history: not on the FY2021 list, #93 in FY2022, #97 in FY2023 and not on the FY2024 list; up 16 since FY2024.
93	Nolen Independent Management LLC Top agencies USDA (Department of Agriculture)	$665,907	0.1%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; down 3 since FY2024.
94	Confederated Tribes of the Umatilla Indian Reservation Through Cayuse Native Hawaiian Veterans, LLC Top agencies Army (Department of the Army)	$659,539	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	Walter L. Shepeard Community Blood Center, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$655,017	0.1%	Rank history: not on the FY2021–FY2024 lists; up 11 since FY2024.
96	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$650,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; down 10 since FY2024.
97	Blood Connection Inc. Top agencies VA (Department of Veterans Affairs)	$637,460	0.1%	Rank history: #91 in FY2021, #84 in FY2022, #79 in FY2023 and #80 in FY2024; down 17 since FY2024.
98	Standard Technology, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$632,569	0.1%	Rank history: #26 in FY2021, #36 in FY2022, #34 in FY2023 and #32 in FY2024; down 66 since FY2024.
99	Precision Rescue, LLP Top agencies USDA (Department of Agriculture)	$627,052	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Decker Contracting & Consulting LLC Top agencies USDA (Department of Agriculture)	$619,847	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

Rankings for the codes under NAICS 62199

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $622 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers